import axios from 'axios'
import {MessageBox, Message} from 'element-ui'
import store from '@/store'
import {getToken, setToken, removeToken} from '@/utils/auth'
import router, {resetRouter} from '@/router'

// create an axios instance
const service = axios.create({
    baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
    // withCredentials: true, // send cookies when cross-domain requests
    timeout: 20000 // request timeout
})

// request interceptor
service.interceptors.request.use(
    config => {
        // do something before request is sent

        if (store.getters.token) {
            // let each request carry token
            // ['X-Token'] is a custom headers key
            // please modify it according to the actual situation
            config.headers['Authorization'] = getToken()
        }
        return config
    },
    error => {
        // do something with request error
        console.log(error) // for debug
        return Promise.reject(error)
    }
)

// response interceptor
service.interceptors.response.use(
    /**
     * If you want to get http information such as headers or status
     * Please return  response => response
     */

    /**
     * Determine the request status by custom code
     * Here is just an example
     * You can also judge the status by HTTP Status Code
     */
    response => {
        const res = response.data
        // if the custom code is not 20000, it is judged as an error.
        if (res.code === 'A000004') {
            removeToken()
            resetRouter()
            alert(res.message)
            document.location.href = 'index.html'
        } else if (res.code !== '20000' && res.code !== '0' && res.code !== '200') {
            Message({
                message: res.msg || 'Error',
                type: 'error',
                duration: 5 * 1000
            })
            // 50008: Illegal token; 50012: Other clients logged in; 50014: Token expired;
            if (res.code === '50008' || res.code === '50012' || res.code === '50014') {
                // to re-login
                MessageBox.confirm('You have been logged out, you can cancel to stay on this page, or log in again', 'Confirm logout', {
                    confirmButtonText: 'Re-Login',
                    cancelButtonText: 'Cancel',
                    type: 'warning'
                }).then(() => {
                    store.dispatch('user/resetToken').then(() => {
                        location.reload()
                    })
                })
            }
            console.log(res)
            return Promise.reject(new Error(res.msg || 'Error'))
        } else {
            const {data} = response
            const {code} = data
            // 状态码为0||200表示api成功
            if (code === '0') {
                const {data: res} = data
                return res
            } else if (code === '200') {
                return data
            } else {
                // 返回数据
                return res
            }
        }
    },
    error => {
        console.log('err' + error) // for debug
        Message({
            message: error.msg,
            type: 'error',
            duration: 5 * 1000
        })
        return Promise.reject(error)
    }
)

export default service
